package core import ( "time" "github.com/nspcc-dev/neo-go/pkg/config" "github.com/nspcc-dev/neo-go/pkg/core/block" "github.com/nspcc-dev/neo-go/pkg/core/transaction" "github.com/nspcc-dev/neo-go/pkg/crypto/hash" "github.com/nspcc-dev/neo-go/pkg/crypto/keys" "github.com/nspcc-dev/neo-go/pkg/smartcontract" "github.com/nspcc-dev/neo-go/pkg/util" "github.com/nspcc-dev/neo-go/pkg/vm/opcode" ) // CreateGenesisBlock creates a genesis block based on the given configuration. func CreateGenesisBlock(cfg config.ProtocolConfiguration) (*block.Block, error) { validators, err := validatorsFromConfig(cfg) if err != nil { return nil, err } nextConsensus, err := getNextConsensusAddress(validators) if err != nil { return nil, err } base := block.Header{ Version: 0, PrevHash: util.Uint256{}, Timestamp: uint64(time.Date(2016, 7, 15, 15, 8, 21, 0, time.UTC).Unix()) * 1000, // Milliseconds. Nonce: 2083236893, Index: 0, NextConsensus: nextConsensus, Script: transaction.Witness{ InvocationScript: []byte{}, VerificationScript: []byte{byte(opcode.PUSH1)}, }, StateRootEnabled: cfg.StateRootInHeader, } b := &block.Block{ Header: base, Transactions: []*transaction.Transaction{}, } b.RebuildMerkleRoot() return b, nil } func validatorsFromConfig(cfg config.ProtocolConfiguration) ([]*keys.PublicKey, error) { vs, err := keys.NewPublicKeysFromStrings(cfg.StandbyCommittee) if err != nil { return nil, err } return vs[:cfg.GetNumOfCNs(0)], nil } func getNextConsensusAddress(validators []*keys.PublicKey) (val util.Uint160, err error) { raw, err := smartcontract.CreateDefaultMultiSigRedeemScript(validators) if err != nil { return val, err } return hash.Hash160(raw), nil } // hashSliceReverse reverses the given slice of util.Uint256. func hashSliceReverse(dest []util.Uint256) { for i, j := 0, len(dest)-1; i < j; i, j = i+1, j-1 { dest[i], dest[j] = dest[j], dest[i] } }